Tubular washer for eyeglasses.



N. M. BAKER. TUBULAR WASHER FOR EYEGLASSES. APPLICATION FILED APR. 3,1911.

1,005,766. Patented 0cc.10,191'1.

lllllllllllll:

WIT/7155858 INVENTOR IVELSU/V M. BAKER f. 6 fi my/0111mm FM W ATTORNEYS1; TED STATES rafrEN OFFICE NELSON M. BAKER, OF SOUTHBRIDGE,MASSACHUSETTS, ASSIGNOR TO AMERICAN OPTICAL COMPANY, OF SOUTHBRIDGE.MASSACHUSETTS, A CORPORATION OF MAS- SACHUSETTS. V

Specification of Letters Patent.

TUBULAR WASHER FOR EYEGLASSES.

Patented Oct. 10, 1911.

Original applicationfiled October 10, 1908, Serial No. 457,119. Dividedand this application filed April 3,

Serial N 0. 618,492.

To all whom it may concern:

Beit'known that I, NELSON M. BAKER, a citizen of the United States, anda resident of Southbridge, county. of Worcester, and State ofMassachusetts, have invented certain new and useful Improvements in Tu.-bular W'ashers for Eyeglasses, of which the following is aspecification.

My invention relates to finger piece eyeglasses, provided with pivotedspring pressed nose clamps, and has for its object to provide animproved bearing for the finger piece which will be secure, durable incontinuous use, easily and inexpensively replaced when it does wearunduly, and which will support the operating spring and prevent the samefrom hearing down upon the arm of the finger piece so as to increase itsfriction with the bridge of the eyeglasses.

Other incidentalobjects will appear as the specification proceeds. IThis application is a division of a prior application filed by meOctober 10, 1.908,-

Serial No. 457,119.

Referring to the drawings, Figure 1 is a plan view of a pair ofeyeglasses of the type described, with my invention applied thereto;Fig. 2 "is an enlarged section, taken through the axis of the pivotscrew, showing one form of my invention; and Fig. 3 is a similar viewshowing a modified form of my nvention.

In Figs. 1 and 2 the nosebridge A has lens clamps B secured to each ofits ends and to these clamps are fastened the lenses C. Nose clamps Dserve to maintain the glasses in position on the nose and are providedwith arms E, which terminate in operating finger pieces F. Screws Gextend into the nose bridge A and serve as axes about which the arms E(and nose clamps D) are movable, said arms being preferably perforatedto receive the screws. A coil spring H surrounds each of said screws G,with its one end abutting against the' lens clam and its other end inengagementwitl ,nose clamp D. The tendency of thisfspring is to pressthe nose clamps D toward one another so that a pressureis exerted on thenose of thewearer for maintaining the glasses in position. To preventthe spring from bearing directly upon the arm E, I provide a tubularwasher comprising a sleeve I having a flange I, saidsleeve surroundingthe screw G and tween the head of the screw G and the flange I and doesnot bear upon the arm E, so that the friction of the latter upon itspivotal mounting as described is dependent only upon the quality of themutually engaging surfaces. The pivotal action will also be smooth andeven and free from wobble if said engaging surfaces are accurately andproperly formed.

The construction shown in Fig. 3 differs from that just described onlyin that the sleeve I is continued above the flangeI to the head of screwG, the shank of said screw being made uniform throughout; the tubularwasher in this case instead of being clamped between a shoulder on thepivot screw and the nose bridge A is clamped between the head of thescrew and the nose bridge. The

arrangement of the spring H, the operation and the advantages of thisconstruction are practically the same as in the case of the constructionshown by Fig. 2.

Various modifications may be made without departing from the scope of myinvention as defined in the following claims:

1. In eyeglasses, the combination with the bridge. of a tubular washercomprising a sleeve and a flange, a nose clan-1p having an armperforated to receive said sleeve, one side of said flange being adaptedto engage a side of said arm, a spring upon the other side of saidflange, and means for attaching said washer to the bridge, substantiallyas and for the purpose described.

2. In eyeglasses, the combination with the bridge of a tubular washercomprising a sleeve and a flange, a nose clamp having an arm perforatedto receive said sleeve, a screw provided with a head for attaching saidwasher to the bridge, and a spring surrounding said screw held betweensaid screw head and said flange, substantially as and for the purposedescribed.

3. In eyeglasses, the combination with the bridge of a tubular washercomprising a sleeve and a flange, a nose clamp having an arm perforatedto receive said sleeve, one

side of said flange being adapted to engage a side of said arm, a screwfor attaching said Washer to the bridge said screw being provided with ashoulder adapted to engage the other side of said flange, and a springseparated by said flange from said arm, substantially as and for thepurpose described. 7

4. In eyeglasses, the combination with the bridge of a tubular washercomprising a sleeve and a flange, ajheaded screw for attaching saidwasher to the bridge, a nose clamp having an arm pivoted upon saidsleeve held between said flange and the bridge, and a spring betweensaid flange and the screw head, substantially as and for the purposedescribed.

5. In eyeglasses of the type described having nose clamps each providedwith a perforated arm,'the combination of a tubular washer comprising asleeve to engage said perforation and a flange at one end of said sleeveto engage a side of, said arm, a screw for securing said washer to thebridge, and

NELSON M. BAKER.

Witnesses:

ELMER G. VILLYOUNG, HARRY H. STYLL.

Copies of this patent may be obtained for five ceifts each, byaddressing the Commissioner of Patents, Washington, D. C.

